Vitamin D

Need.

More.

Vitamin.

D.

I found this article on Yahoo! when I was looking at my inbox for any possible Pottermore e-mail. I have to say this article is very interesting. Ah, the sweet satisfaction of knowledge. Enjoy. I think I'm gonna ask mummy for vitamin D supplements... We only have vitamin A and vitamin C supplements here.

VITAMIN D
This vitamin's biggest claim to fame is its role in strengthening your skeleton. But vitamin D isn't a one-trick nutrient: A study in Circulationfound that people deficient in D were up to 80 percent more likely to suffer a heart attack or stroke. The reason? Vitamin D may reduce inflammation in your arteries. Also, a University of Minnesota study found that people with adequate vitamin D levels release more leptin, a hormone that conveys the "I'm full" message to your brain. Even more impressive, the study also found that the nutrient triggers weight loss primarily from the belly. Another study found that people with higher D levels in their bloodstream store less fat.

The shortfall: Vitamin D is created in your body when the sun's ultraviolet B rays penetrate your skin. Problem is, the vitamin D you stockpile during sunnier months is often depleted by winter, especially if you live in the northern half of the United States, where UVB rays are less intense from November through February. When Boston University researchers measured the vitamin D status of young adults at the end of winter, 36 percent of them were found to be deficient.

Hit the mark: First, ask your doctor to test your blood levels of 25-hydroxyvitamin D. "You need to be above 30 nanograms per milliliter," says Michael Holick, M.D., Ph.D., a professor of medicine at Boston University. Come up short? Eat foods like salmon (900 IU per serving), mackerel (400 IU), and tuna (150 IU). Milk and eggs are also good, with about 100 IU per serving. But to ensure you're getting enough, take 1,400 IU of vitamin D daily from a supplement and a multivitamin. That's about seven times the recommended daily intake for men, but it takes that much to boost blood levels of D, says Dr. Holick.